Will I get away with not studying any electricity? Will I still be able to do enough questions?
Should be fine, electricity usually comes up as one long question and a short q in Q12. However there are 3 short qs usually on electicity/magnetism in Q5 and without knowing them you won't be able to get full marks in that question. They're not to hard though so if you just know the basics for it.
Also an experiment question comes up every year as Q4. I would advise learning the 8 experiments so that you sent limiting yourself in case you can't remember one of the other experiments. They almost all have graphs so if you know them you get approx 15 marks